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2 Sheets-Sheet 1 G. J. BRYEN ROLLING MILL RAGGING MECHANISM Filed Dec.25, 1920 July 24, 1923 July 24, 1923- 1;463;036

G. J. BRYEN ROLLING MILL RAGGING MECHANISM Filed Dec. 23, 1920 2Sheets-Sheet 2 I =3 R i R a a e'a i 5 0 N I 1 8 Q) :Q I N g Q a a Q &,

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Patented July 24, 1923.

v UNITED STATES GEORGE J. BRYEN, OF DUQUESNE, PENNSYLVANIA.

ROLLING-MILL RAGGING MECHANISM.

Application filed December 23, 1920. Serial No. 432,674.

- To allwhom it may concern:

Be it known that I, GEORGE J. BRYEN, a citizen of the United States, andresident of Du'quesne, in the county of Allegheny and i I State ofPennsylvania, have invented certain new. and useful Improvements inRollin -Mill Bagging Mechanisms, of which the fo lowing is aspecification.

I invention relates to apparatus for I roughing the working faces of thereducing rollsof rolling mills.

, In the o ration of rolling mills, particularly two.- igh reversingmills of the type used in rollin blooms, billets and slabs and .1.similar semi-gushed products, the working faces of the rolls areroughened or ragged so that the rolls will bite? the metal being rolledand in that way drag the metal being reduced through the rolls.

U One way of raggingi or roughemngthese surfaces 18 ,to chip, y hand, aser es of fooves around the periphery of the rolls, 55c groovesextending arallel with the axis of the roll. This is a s ow andlaboriousoperation, and, as the roughened surfaces are rapidly worn smooth, mustbe repeated at frequent intervals.

It will be obvious that the rolls cannot be ra god or roughened whilemetal is being rofied so that the delays in rolling, due to the timelost, in ragging the rolls, is a source of great expense in theoperation of such mills. f

. In another way of toughening or ragging the rolls it is necessary todisconnect one roll of a two-hi h mill from thedriving pinion for thatrol in order to simultaneously rag both rolls, and the time lost inuncoupl ng and again coupling the roll and its driving pinions, is thecause of long delays and large ex ense in the operation of, the mill.

neobject of the invention is the prov1 sion of novel means whereby therolls are roughened or rag ed. mechanically instead of by chipping byand.

Another ,ObJBCt of the invention is to pro vide a roll ragging mechanismhaving novel means whereby the opposite, oppositely rotated workingfacesof a pair of rollsmay be simultaneously roughened or ragged.

,Another object of my invention is to rovicle av roll ragging apparatusadapte to roughen or re the opposite faces of a P3111 of reducing r0 lsin a. rolling mill, without 55 disconnectin .therolls from the pinionsor 2. gears {by ,w ich the rolls are positively driven in the operationof the rolling mill, and also in the roll ragging operations.

A further object of this invention is to provide a roll raggingmechanism having novel means whereby the mecanism is ma. nipulated inthe roll ragging operations. A. still further object of. my invention isthe provision of a roll ragging mechanism having the novelconstructions, arrangement and combination of parts shown by thedrawings, described in detail hereinafter, and particularly pointed outin the appended claims.

With these and other objects in view, one formof apparatus embodying myinvention will be described in the following specification andillustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a two-high reversing mill and drivingmechanism therefor, showing a roll ragging mechanism applied thereto.

Figure 2 is a side elevation of roll ragging mechanism constructed inaccordance with my invention, in operative position between a pair ofrolls.

Figure 3 is a top plan of the apparatus of Figure 2. a

Referring now to the drawings, the numerals 2 and 3 designate the upperand lower rolls respectively of a two-high reversing mill, which arejournaled in suitable bearings mounted in the usual manner in thewindows of the roll housin s 4 and 5. The usual pinion housings 6 andpositioned at one side of the housing 5 have the spur pinions or gears 8and 9 supported therein. Thenecks or journals l0 and 11, 12 and 13,respectively, of the pinions 8 and 9 are mounted in bearings in thewindows of the housings 6 and.7, these housings being enclosed toprovide a casing to exclude .dust and dirt and hold a supply oflubricant for the pinions 8 and 9, after a well known and approvedmanner.

The necks 10 and 12 of the gears 8 and 9 are flexibly connectedrespectively to, the neck of the upper roll 2 and the lower roll 3 ofthe mill by spindles 15 and 16 of an approved design. a I

The neck 13 of the lower gear 9 is flexibly connected to a drive shaft17 by coupling 18, from which power is received for-driving the rolls 2and 3. a U

My improved ragging apparatus when op: eratively mounted between therolls 2 and 3 is arranged to simultaneously rag both rolls while theyare being positively driven in opposite directions.

The numeral 20, designates 'the substantially rectangular frame of myragging device which has an upper pair of ragging rolls or disks 21 and22, and a lower pair of ragging rolls or disks 23' and 24 looselyjournaled on suitable pins or axles mounted in said frame. Each of therolls or disks 21, 22 andiZi-B, 24 has a serrated or toothedcircumferential face, and is free to rotate independent of the other.These rolls or disks will be made of high grade tool steel and when notmade of self-hardening steel will be hardened and tempered.

The rear end of the frame 20 is provided with ascrew threadedsocket 26in which is threaded a long handle or arm 27 by which the apparatus isoperatively suspended from an overhead support and is manipulated, inpositioning and removing the 7 device. The handle or arm 27 is providedintermediate its ends with an apertured lug 28 adapted to be connectedto an overhead traveling crane or other supporting devlce,

, b so as to form a flexible support for the apparatus. The handle 27 isbent at a point beyond the lug 2-8 as at 29 and is provided with'a'counterweight 80 to counterbalance the weight of the ragging disks orrollsand frame 20. The rear end of the handle or arm 27 is provided witha head 81 having cross bars or handles 32 and 33 therein.

I The front end of the frame; 20 is also provided with a screw threadedsocket 34 so that the handle 27 may be fastened thereto when founddesirable or necessary.

The operation of the apparatus will be readily understood by those.skilled in the art. In using the apparatus the roll 2 will be adjustedby the usual screw adjusting mechanism so that there will be sufficientspace between the rolls for my device to pass between the rolls 2 and 3.The ragging mechanism will then be positioned between the rolls and theroll 2 of the mill will be moved downwardly by the roll adjustingmechanism until the one of the pairs of disks(2l, 22) is in engagementwith the roll :2 and the other pair (23, 24:) is in engagement with theroll 3. l/Vith the apparatus thus positioned the rolls are slowlyrotated and the teeth of the now rotating disks will cut into thecontacting surfaces of the rotating rolls and quickly form a series ofgrooves therein.

It'will be readily seen that my improved apparatus is a markedimprovement in the art, and therefore, I do not wish to be'limitedtotheex'act construction, shown and described since various changes inminor details of construction may be made without departing from thespirit of my invention, as defined in the appended claims.

gage with and ro'ugh'en the working face of at least one roll of saidrolling mill while positioned between two rolls thereof.

3. A rolling mill ragging mechanism comprising a frame, a plurality ofindependently rotatable disks mounted in said frame, at

least part of said disks having a serrated periphery, and said serratedperiphery be ing adapted to engage With and roughen the working face ofone roll ofsaid rolling mill while" thereof.

4; A rolling mill ragging mechanism com prising a frame, a plurality ofindepend positioned between two rolls ently rotatable disks mounted insaid frame,

at least part of said disks; having a serrated periphery, and saidserrated periphery be in'g adapted to engage with and roughen theworking face of one roll of saild' rolli ng mill while positionedbetween two Iolls thereof, a handle on said frame for position= ing theragging mechanism between said rolls and means on saidh'andle for suspending said ragging mechanism in operative position between the saidrolls.

5'. A rolling. mill ragging mechanism com- 1 prising a frame, aplurality of disks rotatably mounted in said frame, at-least part ofsaid disks having serrated peripheries adapted to engage with androughen the working face, of at least one roll of'the rolling mill whilepositioned between, two rolls of said mill, a handle connected by oneend to said frame, a counterweight ad justably secured thereon at theother end of said handle and means between the ends of said handlewhereby said ragging mechanism is mounted on a support therefor.

' 6. A rolling mill ragging' mechanism com-' prising a frame, apluralityfof disks rotatably mounted in saidqframe, at least part ofsaid disks having serrated peripheries adapted to engage with androughen the working face of at least one roll off the rolling mill whilepositioned between two rolls of said mill, a handle connected byon'end ito said frame, a counterweight adjustably secured thereon at the otherend of said handle and. means. between the ends of said handlewhereby'said ragging mechanism is pivotally connected to a supporttherefor.

7. In the ragging or rolling mill rolls, the

III

steps consisting of inserting a raggiing mechanism between two opposed,axially parallel rolls, relatively adjusting said rolls to thereby bringthe ragging disks of said ragging mechanism into operative engagementwith opposed surfaces of saidrolls and then positivelyrotating saidrolls to thereby rag the surfaces thereof in engagement with saidragging mechanism. a

8. In the ragging of rolling mill rolls, the steps consisting ofinserting a ragging mechanism between two opposed axially parallelrolls, relatively, adjusting said rolls to thereby bring the Taggingdisks of said ragging mechanism into operative engagement with theopposed surfaces of said rolls and then positively and simultaneouslyrotating said rolls to thereby rag the surfaces thereof in engagementwith said ragging mechanism.

In testimony whereof I have hereunto 20 signed my name.

GEORGE J. BRYEN.

